"Map Viewer". British Geological Survey. Archived from the original on 2 December 2016. Retrieved 16 September 2013.zoom to the location and left-click to inspect records
"A1 Holland reclaimed fen"(PDF). Landscape Character Assessment of Boston Borough. Ecus Ltd., on behalf of Boston Borough Council. July 2009. p. 19. Archived from the original(PDF) on 26 September 2013. Retrieved 22 September 2013.
"A1 Holland reclaimed fen"(PDF). Landscape Character Assessment of Boston Borough. Ecus Ltd., on behalf of Boston Borough Council. July 2009. p. 19. Archived from the original(PDF) on 26 September 2013. Retrieved 22 September 2013.
"Map Viewer". British Geological Survey. Archived from the original on 2 December 2016. Retrieved 16 September 2013.zoom to the location and left-click to inspect records